Plow



F. ATI ORGAY LARRALDE.

PLOW.

APPLICATION FILED OCT. 21, 1919.

. 1 388,233 Patented Aug. 23, 1921.

{a {SHEETS-SHEET 1.

II a I! F. ANORGA Y LARRALDE.

PLOW.

APPLICATION FILED OCT. 21. 1919.

M MW SHEETS-SHEET 2- Patented Aug. 23, 1921.

UNITED STATES PATENT OFFICE.

FRANCISCO Afi'O RGA Y LARRALDE, OF MA'IANZAS, CUBA.

PLOW.

T 0 all whom itma'q concern Be it known that I, F RANCISCO AiioRoA Y LARRALDE, a citizen of the Republlc of Cuba, and a resident of Matanz'as, Cuba, whose post-oflice address is #26 Merced street, Matanzas, Cuba, have'lnvented certain new and useful Improvements in Plows, of which the following is a specification.

This invention relates to plows and its main object is to provide the plows with certain simple mechanical devices in order that they may cut the straw and stubble While they plow the ground. 1

Another object of the invention 1s to substantially modify some parts of the common plows at present in use and addlng new devices which tend to cooperate to amost efficient labor by them.

In the annexed drawing:

Figure 1 is a side elevation of a plow provided with the improvements forming the subject-matter of thi invention.-

Fig.2 is an upper plan view thereof.

Fig. 3 is a transverse vertical section of the plow'on line 33 of Fig. 1.

Fig. 4 is a transvers vertical section on line 44 of Fig. 1. 7

And Fig. 5 is a transverse vertical section on line 5-5 of Fig. 1.

In the drawing, 1 indicates the beam of a plow which is a metal beam of upwardly open channeled shape cross-section and bent in angle about the fore third portion of 1ts length, and 2'and 3 are hanging brackets of angular shape and channeled cross-section which are secured in transverse position with respect to the beam 1 by means of bolt screws4 fastened with nuts 5, both brackets being of the same height but the 3 one of longer lateral extension than the 2 one, and on the ends of the horizontal portions of said hanging brackets 2 and 3 there are fixed respectively at its fore ends sides 6 and 7 slightly bent downward and on whose rear ends are secured by means of screws 8 the flanges QofraiSed'arched guides 10 and 11 which are parallel to one another and constitute together guiding small boxes 12, the upper ends of the two pairs of guides 10 and 11' being connected by means of a cross-bar 13"which is fixed between. each two guides 10 and 11 by' means of bolt screws 14 and is also connected to beam 1 underneath its rear end by means of a screw or any other proper Specification of Letters Patent.

slidably mounted bearing dies 15 which loosely support the transverse horizontal shaft 16 on whose ends projecting out from the described frame are securely mounted the traction wheels 17 which are provided at Patented Aug. 23, 1921. Application filed October 21 1919. Serial No. 332,220.

its periphery with tread elements 18. The

pillow-blocks 15 have at its upper portion a heel 19 in a hole of which is threadedly fixed the lower threaded end of a raised arched bolt 20 parallel to the guides 10 and I I 11 and which passes through a die 21 slidably mounted between the guides 10 and 11, there being interposed between each pillowblock 15 and each die 21 a coiled spring 22 winded on the portion of bolt 20 which is interposed between the pillow block 15 and the die 21, and on the threaded end "of the bolt 20 projecting above the die elbowed bolt 27 fixed in raised position through one of th sides 6 and 7 by means of nuts 28 screwed on its threaded ends.

At the central portion of shaft 16 is securely mounted a gear wheel 29 of large diameter and at the side of this wheel there are mounted on the same shaft 16 two parallelvertical plates 30 and 31 which constitute the sides of a longitudinal bed whose head piece is formed by a die 32 which is supported from the horizontal portion of another pending bracket 33 similar to bracket 2 and located at a certain distance behind the same, said pending bracket 33'being secured by mean of bolt screws 34 with its nuts 35 at a side of the beam 1 and by its horizontal portion the same bracket 33 is fixed by a screw 36 underneath the side 7;

On the sides 30 and -31'there is gyratorily mounted a transverse shaft 37 which has secured thereto a gear 38 meshing with the gear wheel 29' and which is integral with a beveled gear wheel39 which in turn meshes with a beveled pinion 40 whose shaft 41 is gyratorily mounted through the head piece 32 and on a bracket 42 interiorly fixed to the side 31 and the forward projecting end of said shaft 41 is connected by means of a Cardan joint 43 with the end of another shaft 44 ,gyratorily mounted on a bearing formed ing with a beveled pinion 48 whose shaft 49 is gyratorily mounted through the vertical portion of the hanging bracket 33 and on the other square section end of said shaft 49 there is secured by a screw 50 a bell-crank 51 which is articulated at it free end and by means of a pin 52 held firm by a forelock 53 to a die 54 located through the slotted vend of a lever of uneven arms 55 pivotally mounted on a horizontal pivot 56 fixed between two parallel supporting plates 57 and 58 Which project to the front from the hanging brackets 2 and 3 underneath the beam 1 and are secured to the inner faces of the vertical portions of said brackets 2 and 3, the die 54 being slidable along a slot 59 in said lever 55.

At the fore third portion of the beam 1 is mounted the low share 60 by means of the fork 61 in w ich terminates the vertical web 62 carrying said share, the branches of the fork 61 being fixed 0n the sides of the beam 1 by intermediate vertical plates 62 and 63 secured to the same sides by a plurality of screws 64, the union of the branches of the fork. 61 with the vertical plates 62 and 63 being effected by means of a 'bolt 65 passing through arched holes thereon andvon whose end is screwed a nut 66, and one of the vertical plates 62 is provided with an extension 67 directed downwardly to the front which serves as support to a knife blade of arched edge 68 which is fixed by a plurality of screws69 at the inner side of said extension 67. Said stationary knife 68 actuates in a scissor like manner with a knife 70 oscillatorily mounted on a horizontal pivot 71 passing through the supporting plates 57 and 58 and also across the web 62 of the share 60 and which is fastened by means of a nut 72 on its threaded end, the rear end of knife 70 being articulated with the fore end of the lever by means of a pin 73 fastened with a forelock 74. f This oscillating knife 70 also actuates in a scissor like mannerwith a knife blade 75 secured with screws at the side of the fore edge of the web 62 of share 60. The latter is provided with a heel 76 which is articulated on 77 with an arched stretching bar 78 whose upper threaded end passes through. a hole in the web of the beam 1 and is secured by means of two nuts 79 and 80 one at each side of the same web.

. v ing bars 83 and .84 which hold at the lower end a transverse horizontal bar 85 provided with a pluralityof holes 86 to place in p0- sition by means of a screw 87 the. forked projections 88 of mold-boards 89 arranged at opposite sides with respect to the beam 1 and behind the share 60.

Between the hanging bracket 3 and the mold-boards 89 there is slidably mounted on brackets 90 and 91 fixed respectively to a side of the beam 1. and of the supporting plate 58, a vertical bar 92 lowerly curved backward and provided with a roller 93 to roll on the ground, the upper end of said bar 92 being articulated with the end of. a hand lever 94 which is pivotally 'mounted at 95 on a bracket 96 secured on web of .beam 1 and said lever 94 is adjacent the side merely imparting thereto an upward movement and moving it slightly sidewise.

Theangular supports 3 and 33 are connected together by a reinforcing plate 99 secured to its vertical portions.

On the fore end of beam 1 there is fixed'by means of screws the fore bar 101 curved. to

side and which terminates in the'vertic-al arched segment 102 provided with a plurality of holes 103 for the variable adjustment of the pin 104 of; articulation with the fork or staple 105 in which terminates the connecting pole forthe drawing of. the apparatus by animals, and through a bracket 106 fixed to a side of bar 101 is slidably mounted a vertical bar 107 earryingat its lower end the horizontal shaft 108 on whose ends are loosely mounted the steering wheels 109, the bar 107 provided with a plurality of holes 110 in order to place same in position at various heights by means of a pro-per pin 111 through bracket .106 and bar 101.

The operation of this plow is as follows: At the time it moves forward, the treading wheels 17 advance onthe ground and the shaft 16 thereof causes the rotation of the gear wheel 29 which in turn causes themtation of the bell-crank 51 through the gear 38, beveled wheel 39, beveled pinion 40, Cardan joint 43, beveled wheel 47 and beveled pinion 48, and the gyratory motion 'of onits pivot 71, this knife 70 acting in a scissor likemanner with the knives 68 and 75, thus cutting ofi' the straw and stubble which comes above the share 60 owing to the advincing motionthereof, and the cut pieces falling on the same ground into the furrows formed therein by the share and which are thereupon covered with the earth turnedup by the mold-boards 89 covering the same furrow. v 7

Owing to the springs 22 interposed between the pilloW-blocks 15;s upp orting the shaft of the treading wheels 17 and the dies 21, said pillow-blocks 15 have a resilient bearing which permits the wheels 17 to be adapted to the unevenness of the ground without materially affecting the position of the frame of the advancing device nor the mechanism thereof.

So as to place the share at the desired inclination with respect to the ground, it is only necessary to loosen somewhat the nut 66 from the pin 65, and to actuate on the nuts 7 9 and 80 of the stretching bar 92 so as to raise or lower somewhat the latter and thereby the share 60 at its rear end, and then to tighten again the nut 66.

The vertical bar 107 provided with holes is for wholly raising the share 60 to the required height so that only the treading wheels 17 and the steering wheels 109 may rub against the ground, it thus being possible to move the apparatus from one place to another with the same ease as any common carriage.

'Whenever it is desired to move the plow from a furrow to another one, it is only required to raise up the hand lever 94 until bearing same on the notch 98 of the bracket 97, by means of which movement the bar 9'2 will be lowered, together with the roller 93 until the latter rests on the ground, and the treading wheels 17 and the frame of the apparatus being raised sufiiciently to turn or change the travel direction of the plow with the minimum resistance.

By means of the mold-boards 89 which can be adjusted in transverse position through the various holes 86 of bar 85, it is possible to adapt the operation or working thereof to furrows of different widths.

It is obvious that the details of construction of the apparatus can be varied without altering the spirit of the invention which is as pointed out in the appended claims.

What I claim is 1. In plows, in combination with the beam and share thereof, a frame hanging from the beam, treading wheels carried on this frame, a system of knives arranged in a scissor like manner and mounted above the share, and a. driving mechanism between the treading wheels and the knives system.

2. In plows, in combination with the beam and share thereof, a frame hanging from the beam, raised arched guiding boxes at the" rear part of said frame, bearing dies slidably mounted in said guiding boxes, a cross horizontal shaft gyratorily mounted on said bearing dies, cushioning means for said bear ing dies, and treading wheels mounted at the end of said shaft.

3. In plows, in combination with the beam and share thereof, a frame hanging from the beam, raised arched guiding boxes at the rear part of said frame, bearlng dies slidably mounted in said iding boxes, a transverse horizontal sha t gyratorily mounted in said bearing dies, other dies slidably mounted in said guiding boxes, handles articulated to the frame and rigidly connected to said sliding dies coil springs interposed between each one of the latter dies and each one of the bearing dies, and treading wheels mounted on the ends of said shaft.

4. In plows, in combination with the beam and share thereof, a frame hanging from the beam, treading wheels carried on this frame, a knife fixed to the beam above the share, a'knife fixed to the front edge of the share supporting web, a knife movable on a horizontal pin sup orted on a fore extension of said hanging rame and which projects in front of the share supporting web, and driving means supported on this hanging frame between the shaft of the treading wheels and said movable knife so as to impart to the latter an oscillating motion in order to form two scissor actions with said two stationary knives.

In witness whereof I afiix my signature.

FRANCISCO Aroma 1 LARRALDE, 

